I have a 1987 Z28 with a 305/carb! i bought it from some guy who didnt take care of the car! it has alot of blow back and it spits alot of oil into the carb and the car runs like crap everytime it does that! If any one can help that would be alot of help to me!

 

I think there is an oil treatment that is supposed to free sticking rings and such. Or just take the hoses off the air cleaner and put breathers in the valve covers